I expect there will be a good Windows OS out by 2020 anyway. MS always do things alternately when it comes to OSs.
Microsoft, where every other OS is good.
Every other MAJOR release. IMHO: DOS 6.22, 3.11 for Workgroups, 98SE, XP, 7... best versions of their time. 3.0 sucked, 95 sucked, ME sucked, Vista sucked.
People didn't like Vista because it was crap. Major stability issues, very few drivers and poor driver support, the constantly annoying "Do you want to let this program do what it is supposed to do and that you have asked it to?" popups.... Windows 7 was a MASSIVE improvement.
It would take a LOT to get me to move from 7 to 8, just like it took a lot to get me to move from XP to 7, but I did it because it really was worth moving up to.
I wonder what the next major revision will be like. Considering the areas the new CEO of MS is focussing on (Cloud services, then mobile), it's not likely to be very good...
7 may well become the new XP with people sticking with it long after MS wants them to.